ask amitava82.
He:
1. Uses Linux Himself
2. Asks all to install Windows
3. Keeps appriciating how beautiful a mac is
in simple words, he is a multi-fanboy
anyway, jokes apart, I advice you to
do exactly what mehul told you
see where you are comfortable.
Just for a quick reference:
1. From what my friend, a guy who triple boots his PC with Vista, Leopard and <random_distro-every-week> says, it takes just 1 hour to learn how to use Leopard. Its supposed to be for those who need everything pre-configured, without need to worry about anything. It has lots and lots of eyecandy, lots of things preconfigured, and lots of good software in its er... "market". This includes the two things mac is famous for, iLife and QuickSilver.
2. Windows, for existing windows users, is familiar territory. You know best.
3. Linux is somewhat hard to get used to if you don't study a bit of basics. And you need to start with a newbie usable distro, like Mint, SuSE, Mandriva or Ubuntu. Never install CRUX and expect to come out after a week as a happy person. From personal experience, I think you need to experience hardships for 5 months before you master one of the four Distros above.
4. Ignore fanboys. Fanboys are always loud mouthed users who have high amount of experience in their own OS and consider anything different to be from mars and not sutiable for humans. They are also usually ignorant about other systems.
5. The best way to choose is to test the OSes manually; If you have free time, allot 1 week for a mac and 1 month for linux. Thats a bare minimum.
Most Importantly
Windows is highly customised as it is. I doubt you will ever "miss-out" on anything. Windows Vista, with lots and lots of customisation, can appear to the superficial user just the same as linux or macintosh. It also has hacks to do similar things. So if you want to play safe, I advice you to stick to windows, and start installing stuff like Object Dock, Virtual Desktop, Fluxbox for Windows, custom windows themes, etc in windows. This may take up more resources than usual, but as long as you have a mainstream PC, it makes no difference.